package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegisterVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @作者：ldk
 * @email 2505496685@qq.com
 * @描述：默认描述
 * @创建时间：17:24 2020-11-20
 * @修改时间：17:24 2020-11-20
 * @修改描述：默认描述
 */
@Controller
public class LoginController {

    @Autowired
    private ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    @GetMapping("/sms/sendCode")
    @ResponseBody
    public R sendCode(@RequestParam("phone")String phone) {

        //1、接口防刷

        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis() - l < 60000){
                //60秒内不能再发手机号
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        //2、验证码的再次校验。Redis
        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code+"_"+System.currentTimeMillis();

        //reids缓存验证码，防止同一个phone在60秒内再次发送
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,substring,10,TimeUnit.MINUTES);

        thirdPartFeignService.sendCode(phone,code);

        return R.ok();
    }



    @PostMapping("/regist")
    public String register(@Valid UserRegisterVo registerVo, BindingResult result, RedirectAttributes attributes) {
        if (result.hasErrors()){
//            Map<String,String> errors = new HashMap<>();
            /**
             * .map(fieldError -> {
             *                 String field = fieldError.getField();
             *                 String defaultMessage = fieldError.getDefaultMessage();
             *                 errors.put(field,defaultMessage);
             *                 return
             *             })
             */
            Map<String, String> errors = result.getFieldErrors().stream()
                    .collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));


            attributes.addFlashAttribute("errors", errors);
            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }

        //真正注册。条用远程服务进行注册
        //1、校验验证码
        String code = registerVo.getCode();

        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + registerVo.getPhone());
        if(!StringUtils.isEmpty(s)){
            if(code.equals(s.split("_")[0])){
                //删除验证码
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX+ registerVo.getPhone());
                //验证码通过 真正注册，调用有偿服务
                R r = memberFeignService.regist(registerVo);
                if(r.getCode() == 0){
                    //成功
                    return "redirect:http://auth.gulimall.com/login.html";
                }else{
                    //失败
                    Map<String,String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String >(){}));
                    attributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            }else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                attributes.addFlashAttribute("errors", errors);
                //校验出错，转发到注册页
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        }else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            attributes.addFlashAttribute("errors", errors);
            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }

    }
    @GetMapping("/login.html")
    public String loginPage(HttpSession session) {
        if (session.getAttribute(AuthServerConstant.LOGIN_USER) != null) {
            return "redirect:http://gulimall.com/";
        }else {
            return "login";
        }
    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes,
                        HttpSession session){
        //远程登录
        R login = memberFeignService.login(vo);
        if(login.getCode()==0){
            //成功
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {});
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }

}
